| 摘要 |
For bracing the wagon of a mobile earth boring mechanism, which wagon has a boring rod guide and feed ramp inclined to the surface of the earth when in its working position, at least one anchor is provided having an elongated shaft which is driven into the earth so as to extend generally parallel to the inclined direction of the ramp and which is connectable to the ramp by an associated connecting device. For better resisting loads applied to the anchor, the anchor shaft may have attached to it a helical worm. The anchor or anchors effectively brace the ramp of the boring machine against both tension and compressive forces with substantially no lateral loads being applied to the anchor; and the drive of the boring mechanism which is normally used for rotating and axially moving the boring rod of the mechanism may be used to emplace the anchor or anchors.
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